详解Android WebView加载html片段

这里我先简单描述一下需求:服务器返回的是html页面的一部分带有标签的内容。

解决的思路是:将服务器返回的内容片段拼凑成一个完整的页面。

下面直接上核心代码:

这里是WebView一些配置

WebSettings settings = webView.getSettings();

settings.setJavaScriptEnabled(true);

settings.setDomStorageEnabled(true);

settings.setUseWideViewPort(true);

settings.setLoadWithOverviewMode(true);

webView.setWebViewClient(new MyWebViewClient(activity));

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {

settings.setLayoutAlgorithm(WebSettings.LayoutAlgorithm.TEXT_AUTOSIZING);

} else {

settings.setLayoutAlgorithm(WebSettings.LayoutAlgorithm.NORMAL);

}

webView.loadData(getHtmlData(item.content), "text/html;charset=utf-8","utf-8");

private String getHtmlData(String bodyHTML) {

String head = "<head>" +

"<meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0, user-scalable=no\"> " +

"<style>html{padding:15px;} body{word-wrap:break-word;font-size:13px;padding:0px;margin:0px} p{padding:0px;margin:0px;font-size:13px;color:#222222;line-height:1.3;} img{padding:0px,margin:0px;max-width:100%; width:auto; height:auto;}</style>" +

"</head>";

return "<html>" + head + "<body>" + bodyHTML + "</body></html>";

}

static class MyWebViewClient extends WebViewClient{

private WaitingDialog dialog;

private Activity activity;

public MyWebViewClient(Activity activity){

dialog = new WaitingDialog(activity);

this.activity = activity;

}

@Override

public boolean shouldOverrideUrlLoading(WebView view, String url) {

LogUtil.e(url);

view.loadUrl(url);

return true;

}

@Override

public void onPageStarted(WebView view, String url, Bitmap favicon) {

super.onPageStarted(view, url, favicon);

if(!activity.isFinishing()) dialog.show();

}

@Override

public void onReceivedSslError(WebView view, SslErrorHandler handler, SslError error) {

handler.proceed();

super.onReceivedSslError(view, handler, error);

}

@Override

public void onPageFinished(WebView view, String url) {

super.onPageFinished(view, url);

if(!activity.isFinishing()) dialog.dismiss();

}

笔者在Nexus6 7.0上面测试偶尔出现,html内容无法加载出来,显示一片空白,开启硬件加速后完美解决。

在上面WebView设置的部分加上如下代码

if (webView.isHardwareAccelerated()) settings.setJavaScriptEnabled(true);

怎么样简单吧,希望对大家的学习有所帮助,也希望大家多多支持。

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